Pump for pumping and agitating cyanid and ore solutions



J F. PIERCY. PUMP FOR PUMPING AND AGITATING CYANID AND ORE SOLUTIONS.APPLICATION FILED MAY 6, 1919.

1,376,574.. Patented May 3, 1921.

INVENTOR ATTORNEY UNITED STATES JACOB FRANKLIN PIERGY, OF SPOKANE,WASHINGTON.

PUMP FOR PUMPING AND AGITATING CYANID AND ORE SOLUTIONS.

Application filed May 6, 1919.

T 0 all whom it may concern.

Be it known that I, JACOB FRANKLIN PIERCY, a citizen of the UnitedStates of America, residing at Spokane, in the county of Spokane, Stateof WVashington, have. invented new and useful Improvements in Pumps forPumping and Agitating Cyanid and Ore Solutions, of which the followingis a specification.

The invention relates to pumps for pumping water, cyanid solutions, andthe like.

The principal object of the invention is to provide means for keepingcyanid and pulp solutions constantly agitated while the same is beingpumped from a tank or other container, and to bring abundance of air incontact with the solution for the purpose of extracting gold by thecyanid process.

A further object of the invention is to proprovide a pump of simpleconstruction that can be operated with a minimum of power.

A further object of the invention is provide valves of specialconstruction adapted for the main purpose of the invention.

In the accompanying drawings like characters of reference are providedfor similar parts in all the views, and in which, Figure 1, is avertical cross sectional view of the pump taken on the line a, a, ofFig. 2; Fig. 2 is a plan view of the pump; Fig. 3 is a detailon anenlarged scale taken on the line Z), Z), of Fig. 1; Fig. A, is a detailview of a section for clamping the canvas or other flexible material tothe rim of the bowl of the pump.

The pump consists of a pipe 1, a bowl 2, a seat valve 3, a head valve A,a plunger 5, canvas or other flexible connections 6, a rim 7, a crankshaft 8 for operating the plunger 5, sections 9 for holding the canvasto the rim of the bowl, and rings 10 that constitute the plunger headand between which the said canvas or other flexible material is clamped.The sections 9 are made so that the side facing the center of the pumpis curved more than the rim wherein they are inserted, so as to take upwhatever slack there may be in the canvas 6. A number of these sectionsare provided all along the rim of the bowl 2, and they are held inposition by means of wedges 11, which are screwed down by the bolt 12.

Specification of Letters Patent.

Patented May 3, 1921.

Serial No. 295,248.

The sections 9 and the wedges 11 are further held in position by meansof the retaining mm 13, and the overlapping rim 14,

which form a part of the bowl 2. The canvas 6 is stretched over theoverlapping rim 14, and goes partly around the sections 9. As inpractical use the said canvas will wear out frequently, and must bereplaced these means are provided to readily remove thecanvas and putanother in its place. The large bowl 2, the plunger 5 and the canvas 6,serve to keep the cyanid solution in agitation and admit a certainamount of air to the solution, which becomes mixed with the solution.The solution as it is being forced out of the bowl comes on top of thecanvas over a wide surface and is thus thoroughly exposed to the airbefore it enters into the filtering tank. The seat valve 3 has prongsattached to it at the bottom and one at the top, which serve to steadyit and keep it in position. The head valve i has prongs attached to itat the bottom and two guide pins 15 and 16 to the top, which serve tohold it in position. The rim 7 is detachable and serves to keep thesolution from running off the canvas 6, except through the channel 17,which connects with the filtering tank 18.

The crank shaft 8 is attached to a beam 19 by means of bearings 20 and21. Said beam is attached to the framework that serves to support thebattery of tanks.

Having thus described my invention what I claim is:

In a pump comprising a pipe, a bowl attached to said pipe, a plunger, aflexible covering connecting said plunger with said bowl, means toattach said covering to said plunger, a sectional inner rim having meansfor receiving the slack-of said flexible covering, and means forattaching and firmly locking said sections of said rim to the rim ofsaid bowl, so as to substantially hold said flexible covering firmly tosaid bowl.

In testimony whereof, I aflix my signature in the presence, of twowitnesses.

JACOB FRANKLIN PIER'CY.

Witnesses:

J. E. MCANDREW, JOHN J. HUMMEL.

